Skiving-machine.



No. 792,686. PATENTED JUNE 20, 1905. H. M. WBARY.

SKIVING MACHINE.

APPLICATION FILED 101113.23, 1904.

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W171 VZiSSLiSI- [Al ENTOR V/M I L 7/ B V N0. 792,636. PATENTBD JUNE 20, 1905. H. M. WEARY. SKIVING MACHINE.

APPLICATION FILED MAR.23,1904.

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PV/YlV/LSSES: [NVENTOR 7620 W 27 M Al/amew No. 792,636. PATENTED JUNE 20, 1905.

H. M. WEARY. SKIVING MACHINE.

APPLICATION FILED MAR.23,1904.

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' K at law /a v 10/ UNITED STATES Patented June 20, 1905.

HARRY M. WVEARY, OF CLEVELAND, OHIO.

SKlVlNG-IVIACHINE.

SPECIFICATION forming part of Letters Patent No. 792,636, dated June 20, 1905.

Application filed March 23, 1904. Serial No. 199,522.

To all whmn it may concern:

Be it known that I, HARRY M. WVEARY, a citizen of the United States, residing at Cleveland, in the county of Ouyahoga and State of Ohio, have invented new and useful Improvements in Skiving-Machines, of which the following is a specification.

This invention relates particularly to a machine for skiving and pointing leather, particularly the laps for leather belts.

The object of the invention is to produce an improved machine of the kind in which an oblique knife is drawn across the leather, which is supported on the table under the knife.

The invention is characterized particularly by improvement with respect to the means for varying and finding the length of the out or lap, whereby it may be used tomake laps of different lengths or to operate on leather of different thicknesses.

Other advantages of construction and operation will be evident from the following description.

In the accompanying drawings, Figure 1 is a top plan view of the machine. Fig. 2 is a side elevation thereof. Fig. 3 is a longitudinal vertical section on the line 3 3 of Fig. 1. Fig. 4 is a cross-section on the line 4 4 of Fig. 1. Fig. 5 is an end elevation. Fig. 6 isadetail in section of what will hereinafter be called the finder. Figs. 7 and 8 are views in section and plan showing the position of the parts when the finder is in use.

Speaking generally, the machine comprises a table or bed for holding the belt to be cut, a frame pivoted beside the table to swing in a vertical plane to vary the angle of the cut, a knife disposed obliquely across the table and slidable back and forth in guides in the frame, and a finder which is also slidable in the same guides in advance of the knife for the purpose of denoting or fixing the point at which the knife begins to cut.

Referring specifically to the drawings, 6 indicates the table or bed mounted upon legs 7 at the corners thereof. An inclined portion 6 leads up to the table proper, and in front of this inclined portion is a cross-.bar 8, against which the leather is clamped by an eccentrically-mounted roller 9, which may be turned by a lever 10, connected to a treadle 11, to clamp the leather against the bar 8. The eccentricity and arrangement of the roller is such that when turned in one direction it opens a space between it and the bar and when turned in the clamping direction it closes said space and binds the belt upwardly against the bar, thereby holding the latter securely in position.

The tilting frame consists of side bars 12, connected at the ends by cross-bars 13 and l t, the latter being dropped by hangers 15 to be out of the way of the belt and the operator. The side bars 12 are grooved on the inside, as at 12, forming guides for the back-and-forth movement of the knife and finder frames. The tilting frame is supported to tilt or rock upon arms 16, projecting from the legs of the table, the arms having knife-edges at the top which fit into V-notches in the under side of lugs or projecting pieces 17 on the side bars 12. The frame may thus be located or tilted to vary the angle and distance of the knife from the table. Normally the tilting frame is raised at the front end by springs 18 in compression between brackets 19, fastened to the legs of the structure and the under side of the frame, which may be lowered to the desired extent by means of cams 20'upon a rock-shaft 21, which is carried at the upper end of arms 22, extending upwardly on both sides of the frame from the legs of the machine. The rock-shaft is turned by a handlever at 23, extending toward the front of the machine in proper position to be operated by the workman. The cams 2O bear on the top of the side bars 12, and the springs under the side bars yield to the pressure of the cams to allow the frame to be brought to the desired inclination.

The knife-bar is indicated at 2&, extending obliquely across the frame between blocks 25, which slide in the guides 12. The knife 24* is secured to the under side of the knife-bar.

At 26 is a bar which hangs just in front of the knife and is designed to keep the leather in position on the table and prevent sucking or drawing thereof. .lts lower edge is rounded and it contacts with the leather just in advance of the knife, being yieldingly pressed against the same by springs 27, which are coiled around the hanging rods 28, the upper ends of which are let loosely through holes in a rocking bar 29, pivoted to swing'between standards 30, mounted on blocks 25. The spring-pressure insures a firm contact against the leather just in advance of the knife during the cutting action and the hanging and pivotal arrangement allows an easy back slip when the knife is retracted.

The finder is indicated at 31, being a pin mounted to move vertically in a block 32, which is slidable laterally between guide-bars 33, which are connected at the ends to blocks 3+1, which are slidable lengthwise of the machine in guides 12, so that the finder may be located, when desired, above the table. The finder-pin extends through a vertical hole in the block 32 and its point projects slightly below said block. It may be pushed down to contact with the leather on the table, as shown in Fig. 7, and when pushed down its foot or point is exactly in line with the edge of the knife 24. Consequently when pushed down until the catch engages the notch 31 it will mark or indicate on the leather the exact point at which the knife will begin to out. A catch engages a notch 31 in the pin to hold it down, and the catch may be released by a trigger 36, when the small spring 37 within the block or casing 32 will lift the pin out of the way of the knife. Inasmuch as the laps on belting are cut in different lengths, the finder is useful in fixing the place of the beginning of the cut or the heel of the lap.

To form a side stop or support for the belt and prevent the same from sliding sidewise on the table, strips 6" are used. 'These are arranged lengthwise in grooves in the top of the table and are of polished steel. Their front ends are beveled off to conforn to the shape of the incline 6, and they are supported underneath by springs 6, which normally project them out of the grooves about oneeighth of an inch. As the knife-frame moves forward these strips lower or yield to the pressure thereof and allow the same to pass thereover. The knife comes down to the table at a slight angle, as will be understood.

In operation the end of the belt to be skived is threaded in from the front of the machine between the clamping-roller 9 and the bar 8 and over the table-top to the end thereof. The finder is then moved to the desired position, according to the length of lap desired. The finder-pin is then pushed down and the front end of the frame tilted down by means of the hand-lever and the cams 20 until the pin touches the leather. As the foot of the pin is in alinement with the edge of the knife that is, with the plane of its movement the finder will indicate on the leather where the knife will begin to cut, and the finder may be shifted and the frame tilted to bring it to the exact point desired. The knife is then advanced and cuts the leather at the angle and length desired. The oblique arrangement of the knife gives a very efficient cut. It prevents breaking of the leather, because it cuts the point gradually and at a draw cut. The machine will operate upon leather of different thicknesses and will 'make a lap of any desired length. The finder acts as an indicator to show where the knife will begin to cut, and thus the knife need not be moved until the frame is brought to the proper inclination to give the exact cut desired.

\Vhat I claim as new, and desire to secure by Letters Patent, is

1. In a skiving-machine, the combination with a table and a knife, relatively movable, and a clamp on the table to hold the material, of means movable over the surface of the material in advance of the knife to indicate where it will begin to cut the material so held.

2. The combination of the table and clamp, a knife movable over the table andmeans to vary the angle of said movement, and a finder or indicator, the indicating-point of which is in the same plane as the knife, and arranged to indicate on the material the point where the knife will begin to cut.

3. The combination with the table and means to hold material thereon, of a tilting frame having guides, a knife slidable in said guides over the table, and means movable over the surface of the material in advance of the knife to indicate where it will begin to cut material on the table.

4:. The combination of the table having grooves lengthwise therein, spring-supported strips in said grooves, and a knife slidable over the table, the strips being constructed to normally project slightly above the table and to yield at the passage of the knife.

5. The combination of a table having a clamp-support thereon for the material, a frame having guides, tiltable beside the table, a knife and its bar slidable in said guides, a

finder-frame slidable in said guides in advance 

